When comparing Waffle.io vs KanbanFlow, the Slant community recommends KanbanFlow for most people. In the question“What is the best task management software for small teams?” KanbanFlow is ranked 15th while Waffle.io is ranked 41st. The most important reason people chose KanbanFlow is:
The board space is very well used and configurable. User interactions are clear and intuitive.
Specs
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Pros

Pro Free for public repos
Any public GitHub repositories can use the software for free.

Pro Links GitHub issues with a Kanban board
Existing GitHub issues can be used to create tasks and managed in a more convenient Kanban style.

Pro Real-time
Each update is visible as soon as it is made.

Pro Simple & easy interface
The board space is very well used and configurable. User interactions are clear and intuitive.
Pro WIP Limits
Pro Swimlanes
Pro Pomodoro timer
Pro Estimation & time spent

Pro Collaboration features
Any changes you make on the board are instantly available to all members of the team.
Cons
Con Managing large project may be difficult
Waffle works best with medium to small projects and very high-level general overviews and less with projects that require very granular management due to the fact that it becomes considerably more difficult to keep track of various cards and priorities as they are pushed off screen very quickly.
Con You cannot do a search on all boards, so if you have a lot of info on many boards, you have to search one at a time

Con No mobile app
There is a web app for mobile devices but it lacks some features that a native app could offer.
